摘要
伪随机脉位调制与伪码调相复合体制引信(PRPPM-PRBC)是现代无线电引信重点研究方向之一,对该体制引信的抗干扰性能和抗干扰方法的研究尚处于理论探索阶段。分析了线性调频(LFM)干扰对PRPPM-PRBC复合体制引信相关检测性能的影响,通过对LFM干扰信号分数阶傅里叶变换(FRFT)的分析,对解调模块输出的基波信号,提出了在分数阶域进行LFM干扰抑制。仿真分析表明,该方法能够有效消除LFM干扰,使引信相关输出得到明显改善。
The PRPPM-PRBC（Pseudo Random Pulse Position Modulation and Pseudo Random Binary Code） combined fuze is an important research area of the modern radio fuze.The research on its anti-interference performance and the corresponding anti-interference method is still in the theory exploring phase.The effect of LFM（Linear Frequency Modulated） interference to the PRPPM-PRBC combined fuze is analyzed.A method of suppressing LFM interference in fractional domain is put forward according to the analysis of the FRFT（Fractional Fourier Transform） result of LFM interference.The simulation and analysis prove that with the given method,the interference can be eliminated effectively and the correlative output can be improved significantly.
出处
《探测与控制学报》
CSCD
北大核心
2009年第1期10-14,共5页
Journal of Detection & Control
